/// Translated from C to D
module glfw3.xkb_unicode;

nothrow:
extern(C): __gshared:

//========================================================================
// GLFW 3.3 X11 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2017 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would
//    be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
//    be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
//    distribution.
//
//========================================================================
// It is fine to use C99 in this file because it will not be built with VS
//========================================================================

import glfw3.internal;

/*
 * Marcus: This code was originally written by Markus G. Kuhn.
 * I have made some slight changes (trimmed it down a bit from >60 KB to
 * 20 KB), but the functionality is the same.
 */

/*
 * This module converts keysym values into the corresponding ISO 10646
 * (UCS, Unicode) values.
 *
 * The array keysymtab[] contains pairs of X11 keysym values for graphical
 * characters and the corresponding Unicode value. The function
 * _glfwKeySym2Unicode() maps a keysym onto a Unicode value using a binary
 * search, therefore keysymtab[] must remain SORTED by keysym value.
 *
 * We allow to represent any UCS character in the range U-00000000 to
 * U-00FFFFFF by a keysym value in the range 0x01000000 to 0x01ffffff.
 * This admittedly does not cover the entire 31-bit space of UCS, but
 * it does cover all of the characters up to U-10FFFF, which can be
 * represented by UTF-16, and more, and it is very unlikely that higher
 * UCS codes will ever be assigned by ISO. So to get Unicode character
 * U+ABCD you can directly use keysym 0x0100abcd.
 *
 * Original author: Markus G. Kuhn <mkuhn@acm.org>, University of
 *                  Cambridge, April 2001
 *
 * Special thanks to Richard Verhoeven <river@win.tue.nl> for preparing
 * an initial draft of the mapping table.
 *
 */


//************************************************************************
//****                KeySym to Unicode mapping table                 ****
//************************************************************************

struct codepair {
  ushort keysym;
  ushort ucs;
}

private immutable ushort[2 * 828] keysymtab = [
  0x01a1, 0x0104,
  0x01a2, 0x02d8,
  0x01a3, 0x0141,
  0x01a5, 0x013d,
  0x01a6, 0x015a,
  0x01a9, 0x0160,
  0x01aa, 0x015e,
  0x01ab, 0x0164,
  0x01ac, 0x0179,
  0x01ae, 0x017d,
  0x01af, 0x017b,
  0x01b1, 0x0105,
  0x01b2, 0x02db,
  0x01b3, 0x0142,
  0x01b5, 0x013e,
  0x01b6, 0x015b,
  0x01b7, 0x02c7,
  0x01b9, 0x0161,
  0x01ba, 0x015f,
  0x01bb, 0x0165,
  0x01bc, 0x017a,
  0x01bd, 0x02dd,
  0x01be, 0x017e,
  0x01bf, 0x017c,
  0x01c0, 0x0154,
  0x01c3, 0x0102,
  0x01c5, 0x0139,
  0x01c6, 0x0106,
  0x01c8, 0x010c,
  0x01ca, 0x0118,
  0x01cc, 0x011a,
  0x01cf, 0x010e,
  0x01d0, 0x0110,
  0x01d1, 0x0143,
  0x01d2, 0x0147,
  0x01d5, 0x0150,
  0x01d8, 0x0158,
  0x01d9, 0x016e,
  0x01db, 0x0170,
  0x01de, 0x0162,
  0x01e0, 0x0155,
  0x01e3, 0x0103,
  0x01e5, 0x013a,
  0x01e6, 0x0107,
  0x01e8, 0x010d,
  0x01ea, 0x0119,
  0x01ec, 0x011b,
  0x01ef, 0x010f,
  0x01f0, 0x0111,
  0x01f1, 0x0144,
  0x01f2, 0x0148,
  0x01f5, 0x0151,
  0x01f8, 0x0159,
  0x01f9, 0x016f,
  0x01fb, 0x0171,
  0x01fe, 0x0163,
  0x01ff, 0x02d9,
  0x02a1, 0x0126,
  0x02a6, 0x0124,
  0x02a9, 0x0130,
  0x02ab, 0x011e,
  0x02ac, 0x0134,
  0x02b1, 0x0127,
  0x02b6, 0x0125,
  0x02b9, 0x0131,
  0x02bb, 0x011f,
  0x02bc, 0x0135,
  0x02c5, 0x010a,
  0x02c6, 0x0108,
  0x02d5, 0x0120,
  0x02d8, 0x011c,
  0x02dd, 0x016c,
  0x02de, 0x015c,
  0x02e5, 0x010b,
  0x02e6, 0x0109,
  0x02f5, 0x0121,
  0x02f8, 0x011d,
  0x02fd, 0x016d,
  0x02fe, 0x015d,
  0x03a2, 0x0138,
  0x03a3, 0x0156,
  0x03a5, 0x0128,
  0x03a6, 0x013b,
  0x03aa, 0x0112,
  0x03ab, 0x0122,
  0x03ac, 0x0166,
  0x03b3, 0x0157,
  0x03b5, 0x0129,
  0x03b6, 0x013c,
  0x03ba, 0x0113,
  0x03bb, 0x0123,
  0x03bc, 0x0167,
  0x03bd, 0x014a,
  0x03bf, 0x014b,
  0x03c0, 0x0100,
  0x03c7, 0x012e,
  0x03cc, 0x0116,
  0x03cf, 0x012a,
  0x03d1, 0x0145,
  0x03d2, 0x014c,
  0x03d3, 0x0136,
  0x03d9, 0x0172,
  0x03dd, 0x0168,
  0x03de, 0x016a,
  0x03e0, 0x0101,
  0x03e7, 0x012f,
  0x03ec, 0x0117,
  0x03ef, 0x012b,
  0x03f1, 0x0146,
  0x03f2, 0x014d,
  0x03f3, 0x0137,
  0x03f9, 0x0173,
  0x03fd, 0x0169,
  0x03fe, 0x016b,
  0x047e, 0x203e,
  0x04a1, 0x3002,
  0x04a2, 0x300c,
  0x04a3, 0x300d,
  0x04a4, 0x3001,
  0x04a5, 0x30fb,
  0x04a6, 0x30f2,
  0x04a7, 0x30a1,
  0x04a8, 0x30a3,
  0x04a9, 0x30a5,
  0x04aa, 0x30a7,
  0x04ab, 0x30a9,
  0x04ac, 0x30e3,
  0x04ad, 0x30e5,
  0x04ae, 0x30e7,
  0x04af, 0x30c3,
  0x04b0, 0x30fc,
  0x04b1, 0x30a2,
  0x04b2, 0x30a4,
  0x04b3, 0x30a6,
  0x04b4, 0x30a8,
  0x04b5, 0x30aa,
  0x04b6, 0x30ab,
  0x04b7, 0x30ad,
  0x04b8, 0x30af,
  0x04b9, 0x30b1,
  0x04ba, 0x30b3,
  0x04bb, 0x30b5,
  0x04bc, 0x30b7,
  0x04bd, 0x30b9,
  0x04be, 0x30bb,
  0x04bf, 0x30bd,
  0x04c0, 0x30bf,
  0x04c1, 0x30c1,
  0x04c2, 0x30c4,
  0x04c3, 0x30c6,
  0x04c4, 0x30c8,
  0x04c5, 0x30ca,
  0x04c6, 0x30cb,
  0x04c7, 0x30cc,
  0x04c8, 0x30cd,
  0x04c9, 0x30ce,
  0x04ca, 0x30cf,
  0x04cb, 0x30d2,
  0x04cc, 0x30d5,
  0x04cd, 0x30d8,
  0x04ce, 0x30db,
  0x04cf, 0x30de,
  0x04d0, 0x30df,
  0x04d1, 0x30e0,
  0x04d2, 0x30e1,
  0x04d3, 0x30e2,
  0x04d4, 0x30e4,
  0x04d5, 0x30e6,
  0x04d6, 0x30e8,
  0x04d7, 0x30e9,
  0x04d8, 0x30ea,
  0x04d9, 0x30eb,
  0x04da, 0x30ec,
  0x04db, 0x30ed,
  0x04dc, 0x30ef,
  0x04dd, 0x30f3,
  0x04de, 0x309b,
  0x04df, 0x309c,
  0x05ac, 0x060c,
  0x05bb, 0x061b,
  0x05bf, 0x061f,
  0x05c1, 0x0621,
  0x05c2, 0x0622,
  0x05c3, 0x0623,
  0x05c4, 0x0624,
  0x05c5, 0x0625,
  0x05c6, 0x0626,
  0x05c7, 0x0627,
  0x05c8, 0x0628,
  0x05c9, 0x0629,
  0x05ca, 0x062a,
  0x05cb, 0x062b,
  0x05cc, 0x062c,
  0x05cd, 0x062d,
  0x05ce, 0x062e,
  0x05cf, 0x062f,
  0x05d0, 0x0630,
  0x05d1, 0x0631,
  0x05d2, 0x0632,
  0x05d3, 0x0633,
  0x05d4, 0x0634,
  0x05d5, 0x0635,
  0x05d6, 0x0636,
  0x05d7, 0x0637,
  0x05d8, 0x0638,
  0x05d9, 0x0639,
  0x05da, 0x063a,
  0x05e0, 0x0640,
  0x05e1, 0x0641,
  0x05e2, 0x0642,
  0x05e3, 0x0643,
  0x05e4, 0x0644,
  0x05e5, 0x0645,
  0x05e6, 0x0646,
  0x05e7, 0x0647,
  0x05e8, 0x0648,
  0x05e9, 0x0649,
  0x05ea, 0x064a,
  0x05eb, 0x064b,
  0x05ec, 0x064c,
  0x05ed, 0x064d,
  0x05ee, 0x064e,
  0x05ef, 0x064f,
  0x05f0, 0x0650,
  0x05f1, 0x0651,
  0x05f2, 0x0652,
  0x06a1, 0x0452,
  0x06a2, 0x0453,
  0x06a3, 0x0451,
  0x06a4, 0x0454,
  0x06a5, 0x0455,
  0x06a6, 0x0456,
  0x06a7, 0x0457,
  0x06a8, 0x0458,
  0x06a9, 0x0459,
  0x06aa, 0x045a,
  0x06ab, 0x045b,
  0x06ac, 0x045c,
  0x06ae, 0x045e,
  0x06af, 0x045f,
  0x06b0, 0x2116,
  0x06b1, 0x0402,
  0x06b2, 0x0403,
  0x06b3, 0x0401,
  0x06b4, 0x0404,
  0x06b5, 0x0405,
  0x06b6, 0x0406,
  0x06b7, 0x0407,
  0x06b8, 0x0408,
  0x06b9, 0x0409,
  0x06ba, 0x040a,
  0x06bb, 0x040b,
  0x06bc, 0x040c,
  0x06be, 0x040e,
  0x06bf, 0x040f,
  0x06c0, 0x044e,
  0x06c1, 0x0430,
  0x06c2, 0x0431,
  0x06c3, 0x0446,
  0x06c4, 0x0434,
  0x06c5, 0x0435,
  0x06c6, 0x0444,
  0x06c7, 0x0433,
  0x06c8, 0x0445,
  0x06c9, 0x0438,
  0x06ca, 0x0439,
  0x06cb, 0x043a,
  0x06cc, 0x043b,
  0x06cd, 0x043c,
  0x06ce, 0x043d,
  0x06cf, 0x043e,
  0x06d0, 0x043f,
  0x06d1, 0x044f,
  0x06d2, 0x0440,
  0x06d3, 0x0441,
  0x06d4, 0x0442,
  0x06d5, 0x0443,
  0x06d6, 0x0436,
  0x06d7, 0x0432,
  0x06d8, 0x044c,
  0x06d9, 0x044b,
  0x06da, 0x0437,
  0x06db, 0x0448,
  0x06dc, 0x044d,
  0x06dd, 0x0449,
  0x06de, 0x0447,
  0x06df, 0x044a,
  0x06e0, 0x042e,
  0x06e1, 0x0410,
  0x06e2, 0x0411,
  0x06e3, 0x0426,
  0x06e4, 0x0414,
  0x06e5, 0x0415,
  0x06e6, 0x0424,
  0x06e7, 0x0413,
  0x06e8, 0x0425,
  0x06e9, 0x0418,
  0x06ea, 0x0419,
  0x06eb, 0x041a,
  0x06ec, 0x041b,
  0x06ed, 0x041c,
  0x06ee, 0x041d,
  0x06ef, 0x041e,
  0x06f0, 0x041f,
  0x06f1, 0x042f,
  0x06f2, 0x0420,
  0x06f3, 0x0421,
  0x06f4, 0x0422,
  0x06f5, 0x0423,
  0x06f6, 0x0416,
  0x06f7, 0x0412,
  0x06f8, 0x042c,
  0x06f9, 0x042b,
  0x06fa, 0x0417,
  0x06fb, 0x0428,
  0x06fc, 0x042d,
  0x06fd, 0x0429,
  0x06fe, 0x0427,
  0x06ff, 0x042a,
  0x07a1, 0x0386,
  0x07a2, 0x0388,
  0x07a3, 0x0389,
  0x07a4, 0x038a,
  0x07a5, 0x03aa,
  0x07a7, 0x038c,
  0x07a8, 0x038e,
  0x07a9, 0x03ab,
  0x07ab, 0x038f,
  0x07ae, 0x0385,
  0x07af, 0x2015,
  0x07b1, 0x03ac,
  0x07b2, 0x03ad,
  0x07b3, 0x03ae,
  0x07b4, 0x03af,
  0x07b5, 0x03ca,
  0x07b6, 0x0390,
  0x07b7, 0x03cc,
  0x07b8, 0x03cd,
  0x07b9, 0x03cb,
  0x07ba, 0x03b0,
  0x07bb, 0x03ce,
  0x07c1, 0x0391,
  0x07c2, 0x0392,
  0x07c3, 0x0393,
  0x07c4, 0x0394,
  0x07c5, 0x0395,
  0x07c6, 0x0396,
  0x07c7, 0x0397,
  0x07c8, 0x0398,
  0x07c9, 0x0399,
  0x07ca, 0x039a,
  0x07cb, 0x039b,
  0x07cc, 0x039c,
  0x07cd, 0x039d,
  0x07ce, 0x039e,
  0x07cf, 0x039f,
  0x07d0, 0x03a0,
  0x07d1, 0x03a1,
  0x07d2, 0x03a3,
  0x07d4, 0x03a4,
  0x07d5, 0x03a5,
  0x07d6, 0x03a6,
  0x07d7, 0x03a7,
  0x07d8, 0x03a8,
  0x07d9, 0x03a9,
  0x07e1, 0x03b1,
  0x07e2, 0x03b2,
  0x07e3, 0x03b3,
  0x07e4, 0x03b4,
  0x07e5, 0x03b5,
  0x07e6, 0x03b6,
  0x07e7, 0x03b7,
  0x07e8, 0x03b8,
  0x07e9, 0x03b9,
  0x07ea, 0x03ba,
  0x07eb, 0x03bb,
  0x07ec, 0x03bc,
  0x07ed, 0x03bd,
  0x07ee, 0x03be,
  0x07ef, 0x03bf,
  0x07f0, 0x03c0,
  0x07f1, 0x03c1,
  0x07f2, 0x03c3,
  0x07f3, 0x03c2,
  0x07f4, 0x03c4,
  0x07f5, 0x03c5,
  0x07f6, 0x03c6,
  0x07f7, 0x03c7,
  0x07f8, 0x03c8,
  0x07f9, 0x03c9,
  0x08a1, 0x23b7,
  0x08a2, 0x250c,
  0x08a3, 0x2500,
  0x08a4, 0x2320,
  0x08a5, 0x2321,
  0x08a6, 0x2502,
  0x08a7, 0x23a1,
  0x08a8, 0x23a3,
  0x08a9, 0x23a4,
  0x08aa, 0x23a6,
  0x08ab, 0x239b,
  0x08ac, 0x239d,
  0x08ad, 0x239e,
  0x08ae, 0x23a0,
  0x08af, 0x23a8,
  0x08b0, 0x23ac,
  0x08bc, 0x2264,
  0x08bd, 0x2260,
  0x08be, 0x2265,
  0x08bf, 0x222b,
  0x08c0, 0x2234,
  0x08c1, 0x221d,
  0x08c2, 0x221e,
  0x08c5, 0x2207,
  0x08c8, 0x223c,
  0x08c9, 0x2243,
  0x08cd, 0x21d4,
  0x08ce, 0x21d2,
  0x08cf, 0x2261,
  0x08d6, 0x221a,
  0x08da, 0x2282,
  0x08db, 0x2283,
  0x08dc, 0x2229,
  0x08dd, 0x222a,
  0x08de, 0x2227,
  0x08df, 0x2228,
  0x08ef, 0x2202,
  0x08f6, 0x0192,
  0x08fb, 0x2190,
  0x08fc, 0x2191,
  0x08fd, 0x2192,
  0x08fe, 0x2193,
  0x09e0, 0x25c6,
  0x09e1, 0x2592,
  0x09e2, 0x2409,
  0x09e3, 0x240c,
  0x09e4, 0x240d,
  0x09e5, 0x240a,
  0x09e8, 0x2424,
  0x09e9, 0x240b,
  0x09ea, 0x2518,
  0x09eb, 0x2510,
  0x09ec, 0x250c,
  0x09ed, 0x2514,
  0x09ee, 0x253c,
  0x09ef, 0x23ba,
  0x09f0, 0x23bb,
  0x09f1, 0x2500,
  0x09f2, 0x23bc,
  0x09f3, 0x23bd,
  0x09f4, 0x251c,
  0x09f5, 0x2524,
  0x09f6, 0x2534,
  0x09f7, 0x252c,
  0x09f8, 0x2502,
  0x0aa1, 0x2003,
  0x0aa2, 0x2002,
  0x0aa3, 0x2004,
  0x0aa4, 0x2005,
  0x0aa5, 0x2007,
  0x0aa6, 0x2008,
  0x0aa7, 0x2009,
  0x0aa8, 0x200a,
  0x0aa9, 0x2014,
  0x0aaa, 0x2013,
  0x0aae, 0x2026,
  0x0aaf, 0x2025,
  0x0ab0, 0x2153,
  0x0ab1, 0x2154,
  0x0ab2, 0x2155,
  0x0ab3, 0x2156,
  0x0ab4, 0x2157,
  0x0ab5, 0x2158,
  0x0ab6, 0x2159,
  0x0ab7, 0x215a,
  0x0ab8, 0x2105,
  0x0abb, 0x2012,
  0x0abc, 0x2329,
  0x0abe, 0x232a,
  0x0ac3, 0x215b,
  0x0ac4, 0x215c,
  0x0ac5, 0x215d,
  0x0ac6, 0x215e,
  0x0ac9, 0x2122,
  0x0aca, 0x2613,
  0x0acc, 0x25c1,
  0x0acd, 0x25b7,
  0x0ace, 0x25cb,
  0x0acf, 0x25af,
  0x0ad0, 0x2018,
  0x0ad1, 0x2019,
  0x0ad2, 0x201c,
  0x0ad3, 0x201d,
  0x0ad4, 0x211e,
  0x0ad6, 0x2032,
  0x0ad7, 0x2033,
  0x0ad9, 0x271d,
  0x0adb, 0x25ac,
  0x0adc, 0x25c0,
  0x0add, 0x25b6,
  0x0ade, 0x25cf,
  0x0adf, 0x25ae,
  0x0ae0, 0x25e6,
  0x0ae1, 0x25ab,
  0x0ae2, 0x25ad,
  0x0ae3, 0x25b3,
  0x0ae4, 0x25bd,
  0x0ae5, 0x2606,
  0x0ae6, 0x2022,
  0x0ae7, 0x25aa,
  0x0ae8, 0x25b2,
  0x0ae9, 0x25bc,
  0x0aea, 0x261c,
  0x0aeb, 0x261e,
  0x0aec, 0x2663,
  0x0aed, 0x2666,
  0x0aee, 0x2665,
  0x0af0, 0x2720,
  0x0af1, 0x2020,
  0x0af2, 0x2021,
  0x0af3, 0x2713,
  0x0af4, 0x2717,
  0x0af5, 0x266f,
  0x0af6, 0x266d,
  0x0af7, 0x2642,
  0x0af8, 0x2640,
  0x0af9, 0x260e,
  0x0afa, 0x2315,
  0x0afb, 0x2117,
  0x0afc, 0x2038,
  0x0afd, 0x201a,
  0x0afe, 0x201e,
  0x0ba3, 0x003c,
  0x0ba6, 0x003e,
  0x0ba8, 0x2228,
  0x0ba9, 0x2227,
  0x0bc0, 0x00af,
  0x0bc2, 0x22a5,
  0x0bc3, 0x2229,
  0x0bc4, 0x230a,
  0x0bc6, 0x005f,
  0x0bca, 0x2218,
  0x0bcc, 0x2395,
  0x0bce, 0x22a4,
  0x0bcf, 0x25cb,
  0x0bd3, 0x2308,
  0x0bd6, 0x222a,
  0x0bd8, 0x2283,
  0x0bda, 0x2282,
  0x0bdc, 0x22a2,
  0x0bfc, 0x22a3,
  0x0cdf, 0x2017,
  0x0ce0, 0x05d0,
  0x0ce1, 0x05d1,
  0x0ce2, 0x05d2,
  0x0ce3, 0x05d3,
  0x0ce4, 0x05d4,
  0x0ce5, 0x05d5,
  0x0ce6, 0x05d6,
  0x0ce7, 0x05d7,
  0x0ce8, 0x05d8,
  0x0ce9, 0x05d9,
  0x0cea, 0x05da,
  0x0ceb, 0x05db,
  0x0cec, 0x05dc,
  0x0ced, 0x05dd,
  0x0cee, 0x05de,
  0x0cef, 0x05df,
  0x0cf0, 0x05e0,
  0x0cf1, 0x05e1,
  0x0cf2, 0x05e2,
  0x0cf3, 0x05e3,
  0x0cf4, 0x05e4,
  0x0cf5, 0x05e5,
  0x0cf6, 0x05e6,
  0x0cf7, 0x05e7,
  0x0cf8, 0x05e8,
  0x0cf9, 0x05e9,
  0x0cfa, 0x05ea,
  0x0da1, 0x0e01,
  0x0da2, 0x0e02,
  0x0da3, 0x0e03,
  0x0da4, 0x0e04,
  0x0da5, 0x0e05,
  0x0da6, 0x0e06,
  0x0da7, 0x0e07,
  0x0da8, 0x0e08,
  0x0da9, 0x0e09,
  0x0daa, 0x0e0a,
  0x0dab, 0x0e0b,
  0x0dac, 0x0e0c,
  0x0dad, 0x0e0d,
  0x0dae, 0x0e0e,
  0x0daf, 0x0e0f,
  0x0db0, 0x0e10,
  0x0db1, 0x0e11,
  0x0db2, 0x0e12,
  0x0db3, 0x0e13,
  0x0db4, 0x0e14,
  0x0db5, 0x0e15,
  0x0db6, 0x0e16,
  0x0db7, 0x0e17,
  0x0db8, 0x0e18,
  0x0db9, 0x0e19,
  0x0dba, 0x0e1a,
  0x0dbb, 0x0e1b,
  0x0dbc, 0x0e1c,
  0x0dbd, 0x0e1d,
  0x0dbe, 0x0e1e,
  0x0dbf, 0x0e1f,
  0x0dc0, 0x0e20,
  0x0dc1, 0x0e21,
  0x0dc2, 0x0e22,
  0x0dc3, 0x0e23,
  0x0dc4, 0x0e24,
  0x0dc5, 0x0e25,
  0x0dc6, 0x0e26,
  0x0dc7, 0x0e27,
  0x0dc8, 0x0e28,
  0x0dc9, 0x0e29,
  0x0dca, 0x0e2a,
  0x0dcb, 0x0e2b,
  0x0dcc, 0x0e2c,
  0x0dcd, 0x0e2d,
  0x0dce, 0x0e2e,
  0x0dcf, 0x0e2f,
  0x0dd0, 0x0e30,
  0x0dd1, 0x0e31,
  0x0dd2, 0x0e32,
  0x0dd3, 0x0e33,
  0x0dd4, 0x0e34,
  0x0dd5, 0x0e35,
  0x0dd6, 0x0e36,
  0x0dd7, 0x0e37,
  0x0dd8, 0x0e38,
  0x0dd9, 0x0e39,
  0x0dda, 0x0e3a,
  0x0ddf, 0x0e3f,
  0x0de0, 0x0e40,
  0x0de1, 0x0e41,
  0x0de2, 0x0e42,
  0x0de3, 0x0e43,
  0x0de4, 0x0e44,
  0x0de5, 0x0e45,
  0x0de6, 0x0e46,
  0x0de7, 0x0e47,
  0x0de8, 0x0e48,
  0x0de9, 0x0e49,
  0x0dea, 0x0e4a,
  0x0deb, 0x0e4b,
  0x0dec, 0x0e4c,
  0x0ded, 0x0e4d,
  0x0df0, 0x0e50,
  0x0df1, 0x0e51,
  0x0df2, 0x0e52,
  0x0df3, 0x0e53,
  0x0df4, 0x0e54,
  0x0df5, 0x0e55,
  0x0df6, 0x0e56,
  0x0df7, 0x0e57,
  0x0df8, 0x0e58,
  0x0df9, 0x0e59,
  0x0ea1, 0x3131,
  0x0ea2, 0x3132,
  0x0ea3, 0x3133,
  0x0ea4, 0x3134,
  0x0ea5, 0x3135,
  0x0ea6, 0x3136,
  0x0ea7, 0x3137,
  0x0ea8, 0x3138,
  0x0ea9, 0x3139,
  0x0eaa, 0x313a,
  0x0eab, 0x313b,
  0x0eac, 0x313c,
  0x0ead, 0x313d,
  0x0eae, 0x313e,
  0x0eaf, 0x313f,
  0x0eb0, 0x3140,
  0x0eb1, 0x3141,
  0x0eb2, 0x3142,
  0x0eb3, 0x3143,
  0x0eb4, 0x3144,
  0x0eb5, 0x3145,
  0x0eb6, 0x3146,
  0x0eb7, 0x3147,
  0x0eb8, 0x3148,
  0x0eb9, 0x3149,
  0x0eba, 0x314a,
  0x0ebb, 0x314b,
  0x0ebc, 0x314c,
  0x0ebd, 0x314d,
  0x0ebe, 0x314e,
  0x0ebf, 0x314f,
  0x0ec0, 0x3150,
  0x0ec1, 0x3151,
  0x0ec2, 0x3152,
  0x0ec3, 0x3153,
  0x0ec4, 0x3154,
  0x0ec5, 0x3155,
  0x0ec6, 0x3156,
  0x0ec7, 0x3157,
  0x0ec8, 0x3158,
  0x0ec9, 0x3159,
  0x0eca, 0x315a,
  0x0ecb, 0x315b,
  0x0ecc, 0x315c,
  0x0ecd, 0x315d,
  0x0ece, 0x315e,
  0x0ecf, 0x315f,
  0x0ed0, 0x3160,
  0x0ed1, 0x3161,
  0x0ed2, 0x3162,
  0x0ed3, 0x3163,
  0x0ed4, 0x11a8,
  0x0ed5, 0x11a9,
  0x0ed6, 0x11aa,
  0x0ed7, 0x11ab,
  0x0ed8, 0x11ac,
  0x0ed9, 0x11ad,
  0x0eda, 0x11ae,
  0x0edb, 0x11af,
  0x0edc, 0x11b0,
  0x0edd, 0x11b1,
  0x0ede, 0x11b2,
  0x0edf, 0x11b3,
  0x0ee0, 0x11b4,
  0x0ee1, 0x11b5,
  0x0ee2, 0x11b6,
  0x0ee3, 0x11b7,
  0x0ee4, 0x11b8,
  0x0ee5, 0x11b9,
  0x0ee6, 0x11ba,
  0x0ee7, 0x11bb,
  0x0ee8, 0x11bc,
  0x0ee9, 0x11bd,
  0x0eea, 0x11be,
  0x0eeb, 0x11bf,
  0x0eec, 0x11c0,
  0x0eed, 0x11c1,
  0x0eee, 0x11c2,
  0x0eef, 0x316d,
  0x0ef0, 0x3171,
  0x0ef1, 0x3178,
  0x0ef2, 0x317f,
  0x0ef3, 0x3181,
  0x0ef4, 0x3184,
  0x0ef5, 0x3186,
  0x0ef6, 0x318d,
  0x0ef7, 0x318e,
  0x0ef8, 0x11eb,
  0x0ef9, 0x11f0,
  0x0efa, 0x11f9,
  0x0eff, 0x20a9,
  0x13a4, 0x20ac,
  0x13bc, 0x0152,
  0x13bd, 0x0153,
  0x13be, 0x0178,
  0x20ac, 0x20ac,
  0xfe50,    '`',
  0xfe51, 0x00b4,
  0xfe52,    '^',
  0xfe53,    '~',
  0xfe54, 0x00af,
  0xfe55, 0x02d8,
  0xfe56, 0x02d9,
  0xfe57, 0x00a8,
  0xfe58, 0x02da,
  0xfe59, 0x02dd,
  0xfe5a, 0x02c7,
  0xfe5b, 0x00b8,
  0xfe5c, 0x02db,
  0xfe5d, 0x037a,
  0xfe5e, 0x309b,
  0xfe5f, 0x309c,
  0xfe63,    '/',
  0xfe64, 0x02bc,
  0xfe65, 0x02bd,
  0xfe66, 0x02f5,
  0xfe67, 0x02f3,
  0xfe68, 0x02cd,
  0xfe69, 0xa788,
  0xfe6a, 0x02f7,
  0xfe6e,    ',',
  0xfe6f, 0x00a4,
  0xfe80,    'a', // XK_dead_a
  0xfe81,    'A', // XK_dead_A
  0xfe82,    'e', // XK_dead_e
  0xfe83,    'E', // XK_dead_E
  0xfe84,    'i', // XK_dead_i
  0xfe85,    'I', // XK_dead_I
  0xfe86,    'o', // XK_dead_o
  0xfe87,    'O', // XK_dead_O
  0xfe88,    'u', // XK_dead_u
  0xfe89,    'U', // XK_dead_U
  0xfe8a, 0x0259,
  0xfe8b, 0x018f,
  0xfe8c, 0x00b5,
  0xfe90,    '_',
  0xfe91, 0x02c8,
  0xfe92, 0x02cc,
  0xff80 /*XKB_KEY_KP_Space*/,     ' ',
  0xff95 /*XKB_KEY_KP_7*/, 0x0037,
  0xff96 /*XKB_KEY_KP_4*/, 0x0034,
  0xff97 /*XKB_KEY_KP_8*/, 0x0038,
  0xff98 /*XKB_KEY_KP_6*/, 0x0036,
  0xff99 /*XKB_KEY_KP_2*/, 0x0032,
  0xff9a /*XKB_KEY_KP_9*/, 0x0039,
  0xff9b /*XKB_KEY_KP_3*/, 0x0033,
  0xff9c /*XKB_KEY_KP_1*/, 0x0031,
  0xff9d /*XKB_KEY_KP_5*/, 0x0035,
  0xff9e /*XKB_KEY_KP_0*/, 0x0030,
  0xffaa /*XKB_KEY_KP_Multiply*/,  '*',
  0xffab /*XKB_KEY_KP_Add*/,       '+',
  0xffac /*XKB_KEY_KP_Separator*/, ',',
  0xffad /*XKB_KEY_KP_Subtract*/,  '-',
  0xffae /*XKB_KEY_KP_Decimal*/,   '.',
  0xffaf /*XKB_KEY_KP_Divide*/,    '/',
  0xffb0 /*XKB_KEY_KP_0*/, 0x0030,
  0xffb1 /*XKB_KEY_KP_1*/, 0x0031,
  0xffb2 /*XKB_KEY_KP_2*/, 0x0032,
  0xffb3 /*XKB_KEY_KP_3*/, 0x0033,
  0xffb4 /*XKB_KEY_KP_4*/, 0x0034,
  0xffb5 /*XKB_KEY_KP_5*/, 0x0035,
  0xffb6 /*XKB_KEY_KP_6*/, 0x0036,
  0xffb7 /*XKB_KEY_KP_7*/, 0x0037,
  0xffb8 /*XKB_KEY_KP_8*/, 0x0038,
  0xffb9 /*XKB_KEY_KP_9*/, 0x0039,
  0xffbd /*XKB_KEY_KP_Equal*/,     '=',
];


//////////////////////////////////////////////////////////////////////////
//////                       GLFW internal API                      //////
//////////////////////////////////////////////////////////////////////////

// Convert XKB KeySym to Unicode
int _glfwKeySym2Unicode(uint keysym) {
    auto tab = cast(codepair[]) keysymtab[];

    size_t min = 0;
    size_t max = tab.length;
    size_t mid;


    // First check for Latin-1 characters (1:1 mapping)
    if ((keysym >= 0x0020 && keysym <= 0x007e) ||
        (keysym >= 0x00a0 && keysym <= 0x00ff))
    {
        return keysym;
    }

    // Also check for directly encoded 24-bit UCS characters
    if ((keysym & 0xff000000) == 0x01000000)
        return keysym & 0x00ffffff;

    // Binary search in table
    while (max >= min)
    {
        mid = (min + max) / 2;
        if (tab[mid].keysym < keysym)
            min = mid + 1;
        else if (tab[mid].keysym > keysym)
            max = mid - 1;
        else
            return tab[mid].ucs;
    }

    // No matching Unicode value found
    return -1;
}
